정답이 있는 간호학 입학 시험 대비 화학 학습지

What is the formula of methane, the main gas in natural gas?

1. ACO₂
2. BCH₄
3. CC₂H₆
4. DCH₂

What range does the common pH scale cover?

1. A1 to 10
2. B−7 to +7
3. C0 to 100
4. D0 to 14

How is percent yield calculated?

1. AActual yield − theoretical yield
2. B(Actual yield ÷ theoretical yield) × 100
3. C(Mass of reactants ÷ mass of products) × 100
4. D(Theoretical yield ÷ actual yield) × 100

같은 족에 속한 원소들에 대한 설명으로 옳은 것은 어느 것인가요?

1. A실온에서 항상 모두 기체이다
2. B전자 껍질 수는 같지만 성질은 다르다
3. C원자가 전자 수가 같고 화학적 성질이 비슷하다
4. D원자 질량이 같고 양성자 수도 같다

Water has a high specific heat capacity. How does this help the human body?

1. AIt helps keep body temperature stable
2. BIt allows oxygen to dissolve in water more easily
3. CIt makes water a poor solvent for salts
4. DIt makes the blood more acidic

물의 몰 질량은 얼마인가요? (H = 1 g/mol, O = 16 g/mol)

1. A17 g/mol
2. B10 g/mol
3. C32 g/mol
4. D18 g/mol

A sealed bag of crisps (potato chips) packed at sea level looks puffed up when it is carried to a high mountain. Why?

1. AThe gas inside the bag is heated strongly by the mountain sunlight
2. BMore gas is produced by the crisps at altitude
3. CThe bag becomes thinner and weaker at altitude
4. DThe outside air pressure is lower, so the gas inside expands

How does soap help remove grease from skin?

1. ASoap makes the grease more dense so it sinks
2. BSoap reacts with grease to form water and carbon dioxide
3. CSoap molecules are completely nonpolar, so they dissolve grease like a solvent
4. DEach soap molecule has a polar end that attracts water and a nonpolar end that attracts grease